Bluegraph
SIMarineUS

Wave intelligence

The systems in the sea

A buoy's significant wave height sums everything in the sea: long groundswell from a storm a thousand miles off, a closer swell, the chop of the local wind. Each buoy's measured directional spectrum is partitioned into those systems, which are followed through time, used to place the storms the swells came from, and checked for seas that cross.

Stations analysed
162 of 164
Newest spectrum
49 min ago
Systems named
315
Swell · wind sea
218 · 97
Seas crossing
9 buoys
Storms, last month
223 placed →
Window
The last 4 days
Method
Reference

Every buoy by how orderly its largest system is: a narrow directional spread means long crests, as in groundswell; a wide one, short, confused seas.

Each petal is a system, pointing to where it comes from, north up. Its length grows with height (the ring is 13 ft); its width is the directional spread. Swell Wind sea Storm placed

StationLargest systemDirectional spread
Satan Shoal, FL 42095 · Gulf of Mexico · 1 h agoWind sea 6 s 30° moderate crests
Yucatan Basin, MX 42056 · Gulf of Mexico · 59 min agoWind sea 7 s 30° moderate crests
Arecibo, PR 41121 · Caribbean and tropical Atlantic · 49 min agoWind sea 6 s 30° moderate crests
Diablo Canyon, CA 46215 · California · 49 min agoSwell 10 s 30° moderate crests
Tanner Bank, CA 46047 · California · 59 min agoSwell 12 s 30° moderate crests
West Santa Barbara, CA 46054 · California · 59 min agoSwell 10 s 30° moderate crests
Shumagin Islands, AK 46075 · Alaska · 59 min agoWind sea 4 s 30° moderate crests
Caribbean Valley 42060 · Caribbean and tropical Atlantic · 59 min agoWind sea 5 s 31° moderate crests
New York Harbor Entrance, NY 44065 · Eastern Seaboard North · 59 min agoWind sea 3 s 32° moderate crests
Fort Pierce, FL (134) 41114 · Eastern Seaboard South · 49 min agoWind sea 5 s 32° moderate crests
Offshore St. Petersburg, FL 42099 · Gulf of Mexico · 49 min agoWind sea 5 s 32° moderate crests
West Washington 46005 · Pacific Northwest · 59 min agoSwell 6 s 32° moderate crests
Central Gulf of Alaska 46085 · Alaska · 59 min agoSwell 8 s 32° moderate crests
Canaveral, FL 41009 · Eastern Seaboard South · 59 min agoSwell 4 s 33° moderate crests
Edisto, SC 41004 · Eastern Seaboard South · 59 min agoSwell 6 s 33° moderate crests
Point Reyes, CA 46214 · California · 49 min agoSwell 11 s 33° moderate crests
Santa Monica Bay, CA 46221 · California · 49 min agoWind sea 7 s 33° moderate crests
St Georges, CA 46027 · California · 59 min agoSwell 7 s 33° moderate crests
Cape Elizabeth, WA 46041 · Pacific Northwest · 59 min agoSwell 11 s 33° moderate crests
Neah Bay, WA 46087 · Pacific Northwest · 1 h agoSwell 11 s 33° moderate crests